Stock-Based Compensation Plans (Summary of Stock Option Activity) (Details) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares
Number of Shares
Beginning balance (in shares) | shares	3,839,858
Options granted (in shares) | shares	19,898
Options exercised (in shares) | shares	(195,708)
Options cancelled (in shares) | shares	(18,805)
Ending balance (in shares) | shares	3,645,243	3,839,858
Vested and exercisable (in shares) | shares	3,088,087
Vested and expect to vest (in shares) | shares	3,645,243
Weighted Average Exercise Price
Beginning balance (in USD per share) | $ / shares	$ 24.22
Options granted (in USD per share) | $ / shares	33.57
Options exercised (in USD per share) | $ / shares	7.53
Options cancelled (in USD per share) | $ / shares	48.84
Ending balance (in USD per share) | $ / shares	25.04	$ 24.22
Vested and exercisable (in USD per share) | $ / shares	21.96
Vested and expected to vest (in USD per share) | $ / shares	$ 25.04
Weighted Average Remaining Contractual Term (in Years)
Awards outstanding	5 years 9 months 10 days	6 years 4 months 28 days
Vested and exercisable	5 years 4 months 17 days
Vested and expected to vest	5 years 9 months 10 days
Aggregate Intrinsic Value (in thousands)
Awards outstanding | $	$ 11,810	$ 112,755
Vested and exercisable | $	11,810
Vested and expected to vest | $	$ 11,810